21418+5737 HJ 3055
21h 41m 51.17s +57° 37' 37.0" P.A. 158.00 sep 7.2 mag 11.10,11.70
Coord 2000 |
21418+5737 |
|
Discov num |
HJ 3055 |
|
Comp |
|
|
Coord arcsec 2000 |
21 41 51.17 +57 37 37.0 |
|
Date first |
1831 |
|
Date last |
2015 |
|
Obs |
9 |
|
Pa first |
161 |
|
Pa last |
158.2 |
|
P.A. Now (θ) |
158.2° |
|
Sep first |
3.0 |
|
Sep last |
7.211 |
|
Sep. Now (ρ) |
7.211" |
|
Mag pri |
11.10 |
|
Mag sec |
11.70 |
|
delta mag (ΔM) |
0.6 |
|
Spectral class |
|
|
Pri motion ra |
-007 |
|
Sec motion ra |
-004 |
|
Pri motion dec |
-007 |
|
Sec motion dec |
-010 |
|
Notes |
|
|
rPM=0.394
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cepheus |
|
Gaia DR2 |
2178479572290021760 |
|
ADS |
15244 |
|